Nutrition, Health, Supplements John Harris Nutrition, Health, Supplements John Harris

Why Almost Everyone Is Vitamin D Deficient (And What Actually Works)

Most people really are low in vitamin D. The reasons have nothing to do with moral failure or weak willpower. The “right amount” depends on age, body fat, sun exposure, health status, and how broken your metabolism already is. Vitamin D can be helpful, boring, or harmful depending on how casually you treat it. As with most things in health, the danger lies not in deficiency or supplementation. The danger is oversimplification.

Vitamin D is technically a hormone, not a vitamin in the classic sense. Your body produces it when ultraviolet B light hits your skin, converting cholesterol into vitamin D3. That alone should tell you something important. This is not kale dust. This is a system that evolved when humans spent most of their time outdoors, half-naked by modern standards, not under fluorescent lights and SPF 50.

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Health, Wellness, Longevity, Psoriatic Arthrits John Harris Health, Wellness, Longevity, Psoriatic Arthrits John Harris

The Longevity Blind Spot: Why Chronic Inflammation Is Aging You Faster Than Sugar Ever Could

Sugar gets all the blame, but chronic inflammation is the real aging accelerant, and it shows up long before anyone hands you a diagnosis. In plain English, this piece breaks down how low-grade inflammation hides in joint pain, fatigue, stubborn fat, brain fog, and autoimmune flares, and why the usual “it’s just sugar” story misses the point. We get into the real drivers most people ignore: sleep debt, stress, ultra-processed food, alcohol, and too much sitting. No detox fantasies, no wellness theater, just the daily maintenance that actually keeps your body from feeling like it’s rusting from the inside out.

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Health, Wellness, Longevity John Harris Health, Wellness, Longevity John Harris

Progressive Overload Is the Boomer Fountain of Youth

Progressive overload isn’t some gym-bro mantra screamed over pre-workout fumes. It’s the grown-up truth that your body only gets stronger when you give it a reason. Lift the same weight for the same reps forever and congratulations, you’ve mastered standing still. Push just a bit harder, keep two reps in the tank, and your Type II fibers start waking up like somebody finally flipped the breaker back on. That’s how you grow muscle after sixty, not by wishing, not by nostalgia, but by applying pressure that your body has to answer. Strength is freedom, and this is how you reclaim it.

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Health, Wellness, Aging John Harris Health, Wellness, Aging John Harris

Change Isn’t the Enemy. It’s the Gatekeeper.

Change isn’t easy, especially when you’ve been doing things a certain way for sixty years. But staying the same is harder in the long run. The truth is, comfort will kill you faster than effort ever will. Behavioral change after sixty isn’t about becoming someone new—it’s about reclaiming the person you were meant to be before life, habits, and convenience got in the way. It’s uncomfortable, inconvenient, and absolutely necessary if you want to keep moving, thinking, and living like you still have something left to do.

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